Specifications

CHANGE PORT AND DRIVE SHAFT LOCATION, SAME ROTATION
13. To change the port to the opposite side and maintain same pump rotation, change drive shaft (32) from
high drive to low drive (3600-3700 series with right angle ports: W to LY, Y to LW, Z to LX, X to LZ) or vice
versa.
14. Remove two washer head cap screws (K) and eight hex head cap screws (L) securing backplate (6A, B) to
case (19A, B, C, D, E) and separate backplate assembly from case assembly. On 3600-4700 “H” and “BH”
pumps, drive gear (34) will pull out with backplate assembly. On “HB”, “SB”, “GHB”, and “BHB” pumps,
drive gear (34) may remain in case assembly.
15. Remove the faceplate (23A, B, C, D).
16. Rotate case (19A, B, C, D, E) 180°, (front to back).
17. Switch drive gear (34) and idler gear/shaft (35 and 33) positions in case (19A, B, C, D, E).
18. If plain faceplate (23A) is used, remount to case (19A, B, C, D, E) in same position. If a relief valve
faceplate (23B, C, D) is used, rotate faceplate 180° and remount to case (19A, B, C, D, E).
19. Rotate backplate (6A, B) assembly 180° and remount on case (19A, B, C, D, E).
20. On pumps with gear reduction unit, mount oil cup (AB) in top hole of gear case (44) and petcock (AC) on
next bottom hole.
SAME ROTATION, CHANGE PORT LOCATION, SAME DRIVE SHAFT LOCATION
21. To change port to opposite side, maintain same pump rotation and drive shaft (32) in same position; the
flow of liquid through the pump will be reversed (3600-3700 series with right angle ports: W to Y, LW to LY,
Z to Z, LZ to LX) or vice versa.
22. Remove two washer head cap screws (K) and eight hex head cap screws (L) securing backplate (6A, B) to
case (19A, B, C, D, E) and separate backplate assembly from case assembly. On 3600-4600 “H” and “BH”
pumps, drive gear (34) may remain in case assembly.
23. Remove faceplate (23A, B, C, D).
24. Remove case (19A, B, C, D, E) and rotate 180° (front to back).
25. Remount and secure case (19A, B, C, D, E) to faceplate (23A, B, C,).
26. Remount backplate (6A, B) assembly to case (19A, B, C, D, E).
7. INSTRUCTIONS FOR DRAINING PUMP
Refer to Section 14, PARTS LIST.
WARNING
• WARNING! Relieve all internal fluid and air pressure inside the pump before attempting to drain the
pump.
• WARNING! Take necessary precautions to prevent the pump from becoming energized while draining
the pump.
• WARNING! Take necessary precautions to prevent injury or physical damage that could be caused by
any loss of the product being pumped while draining the pump.
The extent to which a pump can be drained is dependent upon the product being pumped. Low viscosity products
such as solvents will drain quickly and easily. High viscosity products such as molasses and tar will drain very
slowly. Also, the draining of high viscosity products will be less complete.
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